311653 has 2 divisors, whose sum is σ = 311654. Its totient is φ = 311652.

The previous prime is 311609. The next prime is 311659. The reversal of 311653 is 356113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 311364 + 289 = 558^2 + 17^2 .

It is an emirp because it is prime and its reverse (356113) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311653 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311653.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155826 + 155827.

It is an arithmetic number, because the mean of its divisors is an integer number (155827).

2³¹¹⁶⁵³ is an apocalyptic number.

It is an amenable number.

311653 is a deficient number, since it is larger than the sum of its proper divisors (1).

311653 is an equidigital number, since it uses as much as digits as its factorization.

311653 is an evil number, because the sum of its binary digits is even.

The product of its digits is 270, while the sum is 19.

The square root of 311653 is about 558.2589005112. The cubic root of 311653 is about 67.7990752942.

Adding to 311653 its reverse (356113), we get a palindrome (667766).

The spelling of 311653 in words is "three hundred eleven thousand, six hundred fifty-three".